we are an importer of waste rubbers . They are rejected when new tyre making . such as the unvulcanized rubber compound scrap ,green tyre scrap ,butyl bladder scrap ,nylon cored scrap . And also we recycle the used rubber butyl inner tube , used rubber conveyor belt  with nylon . The quantity we need is so steady and large . My email is joanwang AT delta21 DOT com . SKYPE : joanwang85